I messed around with a character maker and attempted to make the characters in the Book of Human. It's not completely accurate but I think it conveys the general idea of their appearance.
Armun
119Please respect copyright.PENANA37UE1WfkH5
Arbella119Please respect copyright.PENANAkBpwVyt2sr
Filiny119Please respect copyright.PENANAg67BDeYMdH
Gatyk119Please respect copyright.PENANAN8PSbuYj07